| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens barrel which secures the accuracy of the shape of the cam end face of a cam barrel without making an outside diameter large and is easily molded. SOLUTION: First and second lens units 4 and 5 have first and second cam followers 6 and 7 respectively, and are constituted to abut on the cam groove of the cam barrel 2 and the straight advance guide groove 3a of a straight advance guide barrel 3 respectively. The cam barrel 2 is constituted of a cam barrel center part 2a, and first and second cam holding parts 2b and 2c, and the end face of the cam groove is exposed to the outside in a condition made before assembly. COPYRIGHT: (C)2006,JPO&NCIPI
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